Calculator



FIG. 1 is a front, bottom, left side perspective view of a calculator, showing my new design;

FIG. 2 is a front view thereof.

FIG. 3 is a bottom view thereof.

FIG. 4 is a left side view thereof.

FIG. 5 is a top view thereof; and,

FIG. 6 is a back view thereof. 

The ornamental design for a calculator, as shown. 